Hi, thank you. I've keep working a bit on it. The airport ctor doesnt need to init the vector<xways>, it's wasteful. Now it saves a few megabytes by removing unneeded parts from FGRunways (400k+ constructed) and using some string& instead of string copies. By using those changes and also by using reduced precision on FGRunway members (double for length?) i was able to reduce sizeof(FGRunway)(win32) from 256 to 192.
One big contributor to size is SGAtomic. On windows it's 32 bytes for a 4 byte counter. That makes SGReferenced 32 bytes, too, for an 8 bytes payload. After reading the docs on InterlockedIncrement (they say a 4 byte align is necessary) I tried recompiling with SGAtomic aligned on 4 bytes, but i got some quite obscure crashes inside ntsomething.dll called from malloc. Anyone knows why we need to align to 32 bytes (x86's cache line) and not 4 bytes as suggested by the docs? Thanks again, attached is a patch for the patch. May I ask for your patch? greetings, yon On Thu, Dec 4, 2008 at 2:38 AM, James Turner <[EMAIL PROTECTED]> wrote: > > On 1 Dec 2008, at 18:20, James Turner wrote: > > > I will apply and test, sadly I am in the same situation as you for > > getting patches applied :) > > I've tested the apt loader / string split / patch, and everything > seems to work - though I've complicated things by refactoring the > runway / taxiway creation, to fix some style issues, and resolve a > couple of problems: taxiways don't need a reciprocal created (and it's > wasteful to do so), and runways weren't getting their airport set, > which crashed some local code of mine. > > Regards, > James > >
perf2.patch.gz
Description: GNU Zip compressed data
------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
